| Heidenau | |
| Image Coa: | DEU Heidenau (Nordheide) COA.jpg |
| Coordinates: | 53.3167°N 49°W |
| Image Plan: | Heidenau in WL.svg |
| State: | Niedersachsen |
| District: | Harburg |
| Samtgemeinde: | Tostedt |
| Elevation: | 48 |
| Area: | 38.71 |
| Postal Code: | 21258 |
| Area Code: | 04182 |
| Licence: | WL |
| Gemeindeschlüssel: | 03 3 53 018 |
| Divisions: | 7 |
| Mayor: | Anette Randt |
| Bürgermeistertitel: | Bürgermeisterin |
| Party: | CDU |
Heidenau is a municipality in the district of Harburg, in Lower Saxony, Germany.